Writing and reading antiferromagnetic Mn2Au by Néel spin-orbit torques and large anisotropic magnetoresistance

S. Yu. Bodnar, L. Šmejkal, I. Turek, T. Jungwirth, O. Gomonay, J. Sinova, A. A. Sapozhnik, H.-J. Elmers, M. Kläui and M. Jourdan ()
Additional contact information
S. Yu. Bodnar: Johannes Gutenberg-Universität
L. Šmejkal: Johannes Gutenberg-Universität
I. Turek: Charles University
T. Jungwirth: Academy of Sciences of the Czech Republic
O. Gomonay: Johannes Gutenberg-Universität
J. Sinova: Johannes Gutenberg-Universität
A. A. Sapozhnik: Johannes Gutenberg-Universität
H.-J. Elmers: Johannes Gutenberg-Universität
M. Kläui: Johannes Gutenberg-Universität
M. Jourdan: Johannes Gutenberg-Universität

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Using antiferromagnets as active elements in spintronics requires the ability to manipulate and read-out the Néel vector orientation. Here we demonstrate for Mn2Au, a good conductor with a high ordering temperature suitable for applications, reproducible switching using current pulse generated bulk spin-orbit torques and read-out by magnetoresistance measurements. Reversible and consistent changes of the longitudinal resistance and planar Hall voltage of star-patterned epitaxial Mn2Au(001) thin films were generated by pulse current densities of ≃107 A/cm2. The symmetry of the torques agrees with theoretical predictions and a large read-out magnetoresistance effect of more than ≃6% is reproduced by ab initio transport calculations.

Date: 2018
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DOI: 10.1038/s41467-017-02780-x

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